Facebook in Privacy Breach

Many of the most popular applications, or "apps," on the social-networking site Facebook Inc. have been transmitting identifying information—in effect, providing access to people's names and, in some cases, their friends' names—to dozens of advertising and Internet tracking companies, a Wall Street Journal investigation has found.

The issue affects tens of millions of Facebook app users, including people who set their profiles to Facebook's strictest privacy settings. The practice breaks Facebook's rules, and...

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digits: How Hard to Fix Facebook's Privacy Breach?

Facebook says it is taking steps to "dramatically limit" the exposure of users' personal information, after a WSJ investigation showed that personal IDs were being transmitted to third parties via Facebook apps. But how hard is it to fix such a breach - and how concerned should users be about the sharing of these IDs? Julia Angwin joins Digits to discuss.